Experimental Study on Hydraulic Support of Multi-Cylinder Collaborative Control in Fully Mechanized Mining Face
Hydraulic support is a key mechanical equipment to ensure continuous and efficient mining of coal mine fully mechanized working face.In response to the complex characteristics and difficult control of the hydraulic support sliding oil cylinder,the multi-cylinder collaborative control technology of the hydraulic support in the fully mechanized mining face is studied and tested.The mechanism of the hydraulic support's oil cylinder collaborative action during the movement and sliding process is analyzed.Based on this,a computer numerical simulation analysis method is used to build a simulation model in simulationX and conduct numerical simulation.The results show that the hydraulic support's movement speed,displacement,and flow rate are coordinated under the multi-cylinder collaboration,and the action error accuracy is 0.01.The ZFY18000/28/53D two column shield hydraulic support was selected as the experimental prototype.When the hydraulic support multi-cylinder collaborative control was applied and the liquid supply flow rate was 180 L/min,the displacement deviation of the multi-cylinder was small.The movement trend of the hydraulic support multi-cylinder was the same,and the support resistance changed linearly with the displacement.The fluctuation was small during the change process,meeting the accuracy requirements of on-site collaborative control and achieving satisfactory experimental results.This result can provide reference basis for later collaborative control and intelligent improvement of hydraulic supports.
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